Create Your Bash While Loop

Here you will find out:

• how to create Bash While Loop

• Bash While Loop examples

• when DiskInternals can help you

Are you ready? Let's read!

Bash scripting is a bit technical, but over time, as you keep writing scripts, they become easier and easier. Nevertheless, you have a couple of questions to ask in regards to the Bash While loop, right?

Here’s everything you need to know, in detail.

Bash While loop example

A While loop in a Bash script will trigger a series of commands to run repeatedly for as long as the condition result is “True.” Below is an example of Bash While loop syntax.

Example:

Explicit example:

One-line While loop example:

The code above will instruct your system to run command1, command2, command3, and command4 continually until the condition turns to “True.”

Example 1: Infinite While loop in a shell script

An infinite While loop means your script will run the loop commands non-stop. Infinite While loops never stop running and this occurs when the condition always turns out to be “True.”

You can create an infinite While loop with the following command:

You can use the built-in ":"or "true" commands that always returns “True” or any other conditional statement.

Here’s the one-line expression:

Example 2: a loop with a fixed number of repeats

To repeat a loop for a fixed number of times, here’s how to do it:

Create a Bash file “script.sh” and write the following script inside:

The expression above will run the loop 3 times before printing the text content written inside the loop.

Example 3: a loop with a break statement

Everyone has a reason for adding a While loop to Bash shell scripts. Looping with a break statement means ending a loop early in a While loop.

To use a break statement in a While loop, use this command:

This example shows that a While loop is meant to repeat 8 times, but will exit after the 4th time to print the break statement.

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